Partial loss-of-function alleles reveal a role for GNOM in auxin transport-related, post-embryonic development of Arabidopsis.

Détails

ID Serval
serval:BIB_E3806CD5CE4D
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Partial loss-of-function alleles reveal a role for GNOM in auxin transport-related, post-embryonic development of Arabidopsis.
Périodique
Development (cambridge, England)
Auteur⸱e⸱s
Geldner N., Richter S., Vieten A., Marquardt S., Torres-Ruiz R.A., Mayer U., Jürgens G.
ISSN
0950-1991 (Print)
ISSN-L
0950-1991
Statut éditorial
Publié
Date de publication
2004
Volume
131
Numéro
2
Pages
389-400
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
The Arabidopsis GNOM gene encodes an ARF GDP/GTP exchange factor involved in embryonic axis formation and polar localisation of the auxin efflux regulator PIN1. To examine whether GNOM also plays a role in post-embryonic development and to clarify its involvement in auxin transport, we have characterised newly isolated weak gnom alleles as well as trans-heterozygotes of complementing strong alleles. These genotypes form a phenotypic series of GNOM activity in post-embryonic development, with auxin-related defects, especially in the maintenance of primary root meristem activity and in the initiation and organisation of lateral root primordia. Our results suggest a model for GNOM action mediating auxin transport in both embryogenesis and post-embryonic organ development.
Mots-clé
Alleles, Arabidopsis/genetics, Arabidopsis/growth & development, Arabidopsis Proteins/genetics, Arabidopsis Proteins/metabolism, Biological Transport, Active, Gene Expression Regulation, Developmental, Gene Expression Regulation, Plant, Genes, Plant, Gravitropism/genetics, Guanine Nucleotide Exchange Factors, Indoleacetic Acids/metabolism, Meristem/growth & development, Models, Biological, Mutation, Phenotype, Plant Growth Regulators/genetics, Plant Growth Regulators/metabolism, Plant Roots/growth & development
Pubmed
Web of science
Open Access
Oui
Création de la notice
09/03/2008 18:19
Dernière modification de la notice
20/08/2019 16:07
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